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Oengus · 06-13-2010, 12:43 PM

Here is a 250cc Bore 70 Stroke 65, this engine is said to be a 4-valve engine. Rated at 25hp and the same as the YINGANG.

http://dongben.en.alibaba.com/produc...LE_ENGINE.html

The 272cc being called 300cc has a bigger bore and same stroke, but only with two valves. Revs are lower on this engine; the 250cc reaches the higher hp at higher rpms.

Hey I was not born yesterday, these engines how long will they last? I would test one on the road, but is anyone putting miles on these and then pulling them apart?

I read these "reviews" they are words on paper....you can crumble them up and throw them away.

The engine is made by who? What testing went into its development?

I am sorry a test bike is ridden for a longer duration like 5000km; then it should get torn down, whats the exchange for the reviews? Conflict of interests, paid to say.

I did not stay at a Holiday Inn...but I've seen the film Idiocracy though.

06-13-2010, 12:43 PM	#8
Oengus Join Date: Oct 2009 Posts: 826	Here is a 250cc Bore 70 Stroke 65, this engine is said to be a 4-valve engine. Rated at 25hp and the same as the YINGANG. http://dongben.en.alibaba.com/produc...LE_ENGINE.html The 272cc being called 300cc has a bigger bore and same stroke, but only with two valves. Revs are lower on this engine; the 250cc reaches the higher hp at higher rpms. Hey I was not born yesterday, these engines how long will they last? I would test one on the road, but is anyone putting miles on these and then pulling them apart? I read these "reviews" they are words on paper....you can crumble them up and throw them away. The engine is made by who? What testing went into its development? I am sorry a test bike is ridden for a longer duration like 5000km; then it should get torn down, whats the exchange for the reviews? Conflict of interests, paid to say. I did not stay at a Holiday Inn...but I've seen the film Idiocracy though.
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